diff --git a/files/header_checks b/files/header_checks
index 2dcb8c2..8914233 100644
--- a/files/header_checks
+++ b/files/header_checks
@@ -1,4 +1,4 @@
-/^Received:.*with ESMTPSA/^ 	IGNORE
+/^Received:.*with ESMTPSA/	 	IGNORE
 /^X-Originating-IP:/    		IGNORE
 /^X-Mailer:/            		IGNORE
 /^User-Agent:/					IGNORE